The AAX extensions is our primary goal.
We have been working on it for a while now and have released the Sigmund as ProTools compatible already.
LuSH is the next one to come.

The rest of plugins has so much evolved during "the maintenance works" that for now they are intended to come out as paid 2.0 upgrades.
The current owners of 1.0 versions will be greatly cross-graded.

For a moment I strongly advise to use a wrapping software called "Patchwork", by Blue Cat Audio.
This is a decent sand quite popular strategy for PT users, willing to insert VSTs into their ProTools projects.